#include<stdio.h>
int main()
{
    int a[5];
    int i;
    printf("please enter !\n");
    for(i=0;i<5;i++)
    {
        scanf("%d",&a[i]);//这样写输入的时候不要忘记打空格，很麻烦我ctmd调半天愣是没发现哪里错了，吐了
    }
    for(i=4;i>=0;i--)
    {
    printf("%d\n",a[i]);
    }
    printf("enter a number between 0~10000\n");
    int num;
    scanf("%d",&num);
    if(num/1>0){
        if(num/10>0){
            if(num/100>0){
                if(num/1000>0){
                    if(num/10000>0){
                        printf("this is 5 weishu\n");
                    }
                    else printf("this is 4 weishu\n");
                }
                else printf("this is 3 weishu\n");
            }
            else printf("this is 2 weishu\n");
        }
        else printf("this is 1 weishu\n");
    }
    else printf("this number msut>0");
    
   
}